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E. C. SOOY.

(NdModel.)

PULL-EY.

Patented Mar. 2, 1886.

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linnen STATES PULLEY.

SPECIFICATION forming part of Letters Patent No. 336,958. dated March 2. 1886.

Application filed August 2, 1885. Serial No. 175,541. (No model.)

To @ZZ whom z5 may concern:

Be it known that I, EPHRAIM C. SooY, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Pulleys; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming a part of this specification.

The object of my invention is to construct a pulley for mills or other suitable purposes in which the entire periphery is formed of separate layers of ibrous material, and the bers or grain of alternate layers of said material is composed in a transverse direction; and it consists in the novel construction and arrangement of parts hereinafter fully described, and specifically pointed out in the claims.

In the drawings, Figure l is a side elevation of my improved pulley. Fig. 2 is a transverse view of the pulley as seen in Fig. l, showing the covering-plate on the periphery of the pulley. Fig. 3 is View 0f a portion of the periphery of the pulley, showing the manner of construction. Fig. 4 is a vertical sectional view taken through the flanges on oneof the arms of the pulley, and also through rection to said layer b2.

the covering-plate.

A represents the complete pulley. a are the radial arms. A are the anges ou the arms a. A2 are the anges on the'arms a, for securing the layers and coveringplate. A3 is the covering-plate. a a are the rivets through the flanges A2 and covering-plate A". B represents the periphery of the pulley. b is the outer layer, b the alternately-composed layer, and b2 the inner layer, of fibrous material.

In the construction of my improved pulley I form the web thereof preferably with the radial arms a a, which contributes lightness to the pulleys and affords the requisite strength. Upon the ends'of the arms a a, near the periphery, I form the flanges A A2, which ex- .tend laterally from said arms the proportional distance required for the width ofthe periphery of said pulley, the anges A2 being made with. increased dimensions circumferentially,

to permit the insertion of additional rivets through said fiange and the covering-plate.

The entire periphery of the pulley I make of wood suitable for the purpose, and in separate layers, the layers being composed in the following manner: A single' board, b2, of the desired thickness, and adapted to be easily bent, and of the .proper width, is bent circumferentially around the arms c a of the pulley, and laid breadthwise upon the flanges A2, upon the ends of the said arms a a, the grain of-the board b2 running in the direction of said circumference. The board b2 is then cut the requisite length, and the opposite ends brought together, so as to meet and tit closely together without overlapping upon one ofthe anges A2, which ends are held in place' temporarily by clamps. I then cut a board of corresponding thickness to the one first placed upon the fianges A2 into short lengths, forming the layers b b', which are equal in length to the width of the layer b2, the said layer b' being cut from the board across the grain.

The layers b b are then laid in a transverse' relation to and upon the outside of the layer b2, the sides of the said layers b b suitably beveled to t closely together, and the re` quisite number of layers 7J b placed upon the layer b2 and around the pulley, to form one continuous intermediate layer in separate parts, the grain running in a transverse di- I then take a board of the similar width and thickness to that of the layer b2, with the grain running in the same direction, and cut said board the requisite length to extend around the pulleyoutside of the layers b. This outer board forms the layer b, and is placed upon the layer b breadthwise and bent, so as to fit closely to said layers b and around the pulley circumferentially, and the opposite ends of said layer b brought together without overlapping, and the covering-plate A3, which is made of the proper width, placed over the joint formedl by the meeting ends of the layer b.

are then made through the covering-plate and extended through the layers b, b', and b2, and also through the flange A2, and the rivets a inserted through said perforations, and upset upon the inner vside of the flange A2 of said' pulley. Near the joints formed by the meet- Perforations IOC ing of the ends of the layer b, the said ends are rabbeted in a transverse relation to the pulley equal to the width and thickness of the overlapping-plate, so that when the covering-plate is placed over the joint it will t into the said rabbet, and its outer surface present an equally smooth conformation with the outer surface of the pulley.

It will be obvious that straw-board and the like material may be advantageously used with the best results. The alternate layers are riveted to the anges A', upon each of the arms a of the pulley, a rivet passed through the said ange and through the layers b, b', and b, on opposite sides of the arms a, being found suiicient.

rl`he advantages of my invention consist in the production of a light, serviceable pulley of great durability and simplicity of construction.

Having fully described my invention, what I now claim as new, and desire to secure by Letters Patent, is-

1. A pulley having its periphery formed of separate layers of fibrous material composed in one direction, and the fibers or grain of al ternate layers of said material composed in a transverse direction,substantially as specified.

2. A pulley having its periphery formed of separate outer and inner layers of fibrous material, the grain of which is composed in one direction, and 'an intermediate layer in `separate parts, the grain of which is composed in a transverse direction, as specified.

3. A pulley having its web constructed with radial arms, and ilanges upon said arms, and a periphery formed of separate layers of wood, the grain of which is composed in one direction, and an alternate layer in separable parts, the grain of which is composed in a transverse direction, and all of said layers riveted to said anges, as specified.

4. A pulley having its web constructed with radial arms, and anges upon said arms, and a periphery formed of separate layers of wood, the joints of which are formed upon said flanges, and a covering-plate, as and for the purpose specified. Y

EPHRAIM C. SOOY.

Witnesses:

FRED. W. PERKINS, J. H. PRESTON. 

